/**
 * Created by jiachenpan on 16/11/18.
 */

export function parseTime(time, cFormat) {
    if (arguments.length === 0) {
      return null;
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
    let date;
    if (typeof time == 'object') {
      date = time;
    } else {
      if (('' + time).length === 10) time = parseInt(time) * 1000;
      date = new Date(time);
    }
    const formatObj = {
      y: date.getFullYear(),
      m: date.getMonth() + 1,
      d: date.getDate(),
      h: date.getHours(),
      i: date.getMinutes(),
      s: date.getSeconds(),
      a: date.getDay()
    };
    const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
      let value = formatObj[key];
      if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
      if (result.length > 0 && value < 10) {
        value = '0' + value;
      }
      return value || 0;
    });
    return time_str;
  }
 
  export function formatTime(time, option) {
    time = +time * 1000;
    const d = new Date(time);
    const now = Date.now();
 
    const diff = (now - d) / 1000;
 
    if (diff < 30) {
      return '刚刚'
    } else if (diff < 3600) { // less 1 hour
      return Math.ceil(diff / 60) + '分钟前'
    } else if (diff < 3600 * 24) {
      return Math.ceil(diff / 3600) + '小时前'
    } else if (diff < 3600 * 24 * 2) {
      return '1天前'
    }
    if (option) {
      return parseTime(time, option)
    } else {
      return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
    }
  }
 
 // 格式化时间
  export function getQueryObject(url) {
    url = url == null ? window.location.href : url;
    const search = url.substring(url.lastIndexOf('?') + 1);
    const obj = {};
    const reg = /([^?&=]+)=([^?&=]*)/g;
    search.replace(reg, (rs, $1, $2) => {
      const name = decodeURIComponent($1);
      let val = decodeURIComponent($2);
      val = String(val);
      obj[name] = val;
      return rs;
    });
    return obj;
  }
 
 
 /**
  *get getByteLen
  * @param {Sting} val input value
  * @returns {number} output value
  */
  export function getByteLen(val) {
    let len = 0;
    for (let i = 0; i < val.length; i++) {
      if (val[i].match(/[^\x00-\xff]/ig) != null) {
        len += 1;
      } else { len += 0.5; }
    }
    return Math.floor(len);
  }
 
  export function cleanArray(actual) {
    const newArray = [];
    for (let i = 0; i < actual.length; i++) {
      if (actual[i]) {
        newArray.push(actual[i]);
      }
    }
    return newArray;
  }
 
  export function param(json) {
    if (!json) return '';
    return cleanArray(Object.keys(json).map(key => {
      if (json[key] === undefined) return '';
      return encodeURIComponent(key) + '=' +
             encodeURIComponent(json[key]);
    })).join('&');
  }
 
  export function param2Obj(url) {
    const search = url.split('?')[1];
    if (!search) {
      return {}
    }
    return JSON.parse('{"' + decodeURIComponent(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g, '":"') + '"}');
  }
 
  export function html2Text(val) {
    const div = document.createElement('div');
    div.innerHTML = val;
    return div.textContent || div.innerText;
  }
 
  export function objectMerge(target, source) {
     /* Merges two  objects,
      giving the last one precedence */
 
    if (typeof target !== 'object') {
      target = {};
    }
    if (Array.isArray(source)) {
      return source.slice();
    }
    for (const property in source) {
      if (source.hasOwnProperty(property)) {
        const sourceProperty = source[property];
        if (typeof sourceProperty === 'object') {
          target[property] = objectMerge(target[property], sourceProperty);
          continue;
        }
        target[property] = sourceProperty;
      }
    }
    return target;
  }
 
 
  export function scrollTo(element, to, duration) {
    if (duration <= 0) return;
    const difference = to - element.scrollTop;
    const perTick = difference / duration * 10;
    setTimeout(() => {
      console.log(new Date())
      element.scrollTop = element.scrollTop + perTick;
      if (element.scrollTop === to) return;
      scrollTo(element, to, duration - 10);
    }, 10);
  }
 
  export function toggleClass(element, className) {
    if (!element || !className) {
      return;
    }
    let classString = element.className;
    const nameIndex = classString.indexOf(className);
    if (nameIndex === -1) {
      classString += '' + className;
    } else {
      classString = classString.substr(0, nameIndex) + classString.substr(nameIndex + className.length);
    }
    element.className = classString;
  }
 
  export const pickerOptions = [
    {
      text: '今天',
      onClick(picker) {
        const end = new Date();
        const start = new Date(new Date().toDateString());
        end.setTime(start.getTime());
        picker.$emit('pick', [start, end]);
      }
    }, {
      text: '最近一周',
      onClick(picker) {
        const end = new Date(new Date().toDateString());
        const start = new Date();
        start.setTime(end.getTime() - 3600 * 1000 * 24 * 7);
        picker.$emit('pick', [start, end]);
      }
    }, {
      text: '最近一个月',
      onClick(picker) {
        const end = new Date(new Date().toDateString());
        const start = new Date();
        start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
        picker.$emit('pick', [start, end]);
      }
    }, {
      text: '最近三个月',
      onClick(picker) {
        const end = new Date(new Date().toDateString());
        const start = new Date();
        start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
        picker.$emit('pick', [start, end]);
      }
    }]
 
  export function getTime(type) {
    if (type === 'start') {
      return new Date().getTime() - 3600 * 1000 * 24 * 90
    } else {
      return new Date(new Date().toDateString())
    }
  }
 
  export function debounce(func, wait, immediate) {
    let timeout, args, context, timestamp, result;
 
    const later = function() {
     // 据上一次触发时间间隔
      const last = +new Date() - timestamp;
 
     // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
      if (last < wait && last > 0) {
        timeout = setTimeout(later, wait - last);
      } else {
        timeout = null;
       // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
        if (!immediate) {
          result = func.apply(context, args);
          if (!timeout) context = args = null;
        }
      }
    };
 
    return function(...args) {
      context = this;
      timestamp = +new Date();
      const callNow = immediate && !timeout;
     // 如果延时不存在，重新设定延时
      if (!timeout) timeout = setTimeout(later, wait);
      if (callNow) {
        result = func.apply(context, args);
        context = args = null;
      }
 
      return result;
    };
  }
 
 
  export function deepClone(source) {
    if (!source && typeof source !== 'object') {
      throw new Error('error arguments', 'shallowClone');
    }
    const targetObj = source.constructor === Array ? [] : {};
    for (const keys in source) {
      if (source.hasOwnProperty(keys)) {
        if (source[keys] && typeof source[keys] === 'object') {
          targetObj[keys] = source[keys].constructor === Array ? [] : {};
          targetObj[keys] = deepClone(source[keys]);
        } else {
          targetObj[keys] = source[keys];
        }
      }
    }
    return targetObj;
  }
 